Carlos Rojas

Data engineer, with experience in business intelligence, Big Data, ETL, SQL, machine learning, data pipelines, AWS, computer vision systems and embedded systems. Responsible and committed person, team player leader of development teams, strong analytical skills, excellent communications skills and troubleshooting abilities. Able to take requirements and transform it into high valuables data driven solutions.

Data Engineer Consultant Apr 2021 – Apr 2023
Verizon Consumer Group (Tracfone Inc) – Quantica BPO. Barranquilla, Colombia.
• Created machine learning model using Pyspark, AWS EMR, AWS Datapipeline, that predicts customers who will only do their first redemption before leaving the service. Overall, the model checks 15M customers with performance (F1 score) of 0.71 on average.
• Built monthly performance report automation for different prepaid services brands, extracting data from ThoughtSpot using Python. Reducing execution time from 1 week to 1 hour.
• Developed quarterly reports automation, for carrier migration process from AT&T to Verizon network. Using Pyspark and AWS Redshift. Allowing customer experience team to create with them customer retention strategies.
• Used Snowflake data warehouse to extract data from our and create dashboards to measure KPI of the population of each brand.
• Validated on premise Oracle databases vs cloud AWS databases with more than 15M records using SQL and Pyspark.
Products Development Technical Coordinator Nov 2018 – Mar 2021
Meico SA. Barranquilla, Colombia.
• Managed technical validation and negotiations with overseas providers, related to private brands technological products.
• Designed assembly line and production process for private brands home appliances, increasing production capabilities by 80%.
• Scraped from Colombia national importation raw data, providers, and prices of different type of products to validate national products target prices using Pandas and Python. Over 5 years of importation data.
• Consolidated all the information regarding private brands products packaging dimensions to standardize storage and reports for national recycling entities using Python and Pandas. Over 2500 SKU.
Products Development Manager Sept 2016 – Jun 2018
3D Make-R S.A.S. Barranquilla, Colombia.
• Directly responsible for guiding the development team to achieve different goals related to new products and projects. On average released 3 new products by year.
• Private brands products certification, according to international and local standards to achieve quality assurance. More than 50 different types of products certifications.
• Developed firmware, software, and hardware of different 3D printing systems using C, C++, Python and CAD tools.
• Trained different customers on the usage of 3D printers and design of 3D models, more than 100 sessions.
• Designed test metrics to validate and troubleshot different behaviors that a 3D printer will have in their lifetime.
Development Engineer Aug 2013 – Aug 2016
DST S.A.S. Barranquilla Colombia.
• Developed drowsiness avoidance computer vision ML algorithm to detect on drivers faces symptoms of depletion using C++, OpenCV over single board solution, with 95% of performance. .
• Designed firmware and hardware for embedded systems, designed for hostile oil and gas environments, using C, C++, Python and CAD Tools. More than 6 IoT products.
• Created automated test bench system using C and Python to test new hardware products according to SAE normative.
• Directly responsible for training customers on the usage of different hardware for mining environments.
• Written product manuals to help customers troubleshot different types of electronics products and software.

AI product Manager Nanodegree. Jan 2021 – Jul 2021
Udacity - Awarded Scholarship
Hybrid Cloud Engineer Nanodegree. Oct 2020 - Jan 2021
Udacity - Awarded Scholarship
Bachelor of Engineering (B. Eng.), Electronics engineering. Jul 2008 – Feb 2014
Universidad del Norte.